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<meta charset="utf-8">
<title>CSS Backgrounds and Borders Module Level 3: parsing box-shadow with valid values</title>
<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact"/>
<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-backgrounds/#box-shadow">
<meta name="assert" content="box-shadow supports the full grammar 'none | <shadow>#'.">
<meta name="assert" content="Box shadow color, inset, and length parameters can be mixed in any order." />
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
<script src="../../../css/support/parsing-testcommon.js"></script>
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<script>
test_valid_value("box-shadow", "none");
test_valid_value("box-shadow", "1px 2px");
test_valid_value("box-shadow", "red 1px 2px 3px -4px inset"); // Edge serializes as "inset 1px 2px 3px -4px red"
test_valid_value("box-shadow", "inset 1px 2px red", "red 1px 2px inset");
test_valid_value("box-shadow", "1px -2px inset, red -3px 4px"); // Edge serializes as "inset 1px -2px, -3px 4px red"
test_valid_value("box-shadow", "inset 1px -2px, -3px 4px red", "1px -2px inset, red -3px 4px");


// color only
test_valid_value("box-shadow", "4px 4px green", "green 4px 4px");
test_valid_value("box-shadow", "green -4px 4px", "green -4px 4px");
test_valid_value("box-shadow", "-4px 4px 0 green", "green -4px 4px 0px");
test_valid_value("box-shadow", "green -4px 4px 0", "green -4px 4px 0px");
test_valid_value("box-shadow", "-4px 4px 0 0 green", "green -4px 4px 0px 0px");
test_valid_value("box-shadow", "green -4px 4px 0 0", "green -4px 4px 0px 0px");

// inset only
test_valid_value("box-shadow", "4px -4px inset", "4px -4px inset");
test_valid_value("box-shadow", "inset 4px -4px", "4px -4px inset");
test_valid_value("box-shadow", "4px -4px 0 inset", "4px -4px 0px inset");
test_valid_value("box-shadow", "inset 4px -4px 0", "4px -4px 0px inset");
test_valid_value("box-shadow", "4px -4px 0 0 inset", "4px -4px 0px 0px inset");
test_valid_value("box-shadow", "inset 4px -4px 0 0", "4px -4px 0px 0px inset");

// color and inset
test_valid_value("box-shadow", "4px -4px green inset", "green 4px -4px inset");
test_valid_value("box-shadow", "4px -4px inset green", "green 4px -4px inset");
test_valid_value("box-shadow", "inset green 4px -4px", "green 4px -4px inset");
test_valid_value("box-shadow", "green inset 4px -4px", "green 4px -4px inset");
test_valid_value("box-shadow", "green 4px -4px inset", "green 4px -4px inset");
test_valid_value("box-shadow", "inset 4px -4px green", "green 4px -4px inset");
test_valid_value("box-shadow", "inset green 4px -4px 0", "green 4px -4px 0px inset");
test_valid_value("box-shadow", "green inset 4px -4px 0", "green 4px -4px 0px inset");
test_valid_value("box-shadow", "4px -4px 0 green inset", "green 4px -4px 0px inset");
test_valid_value("box-shadow", "4px -4px 0 inset green", "green 4px -4px 0px inset");
test_valid_value("box-shadow", "green 4px -4px 0 inset", "green 4px -4px 0px inset");
test_valid_value("box-shadow", "inset 4px -4px 0 green", "green 4px -4px 0px inset");
test_valid_value("box-shadow", "inset green 4px -4px 0 0", "green 4px -4px 0px 0px inset");
test_valid_value("box-shadow", "green inset 4px -4px 0 0", "green 4px -4px 0px 0px inset");
test_valid_value("box-shadow", "4px -4px 0 0 green inset", "green 4px -4px 0px 0px inset");
test_valid_value("box-shadow", "4px -4px 0 0 inset green", "green 4px -4px 0px 0px inset");
test_valid_value("box-shadow", "green 4px -4px 0 0 inset", "green 4px -4px 0px 0px inset");
test_valid_value("box-shadow", "inset 4px -4px 0 0 green", "green 4px -4px 0px 0px inset");

// No parse-time range-checking for <blur-radius> given as a math function
// https://drafts.csswg.org/css-values-4/#calc-range
test_valid_value("box-shadow", "1px 1px calc(-1px)", "1px 1px calc(-1px)");
test_valid_value("box-shadow", "1px 1px calc(1em - 2px)", "1px 1px calc(1em - 2px)");
</script>
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